Hengshan in context: Street-network sprawl trends

Hengshan in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
HengshanShaanxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Hengshan plotted against Shaanxi and China. The SNDi of new construction in Hengshan rose steadily, compared to Shaanxi which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Hengshan's incremental SNDi rose from 2.15 to 2.71 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hengshan ranked 15th out of 62 cities in Shaanxi and 468th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.71
Rank in China
666th of 1843
Rank in Shaanxi
25th of 62

Entire Network (Aggregate)

SNDi value
2.34
Rank in China
468th of 1843
Rank in Shaanxi
15th of 62

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

012345<19751976–19901991–20052006–2020SNDi of street additions
012345<19751976–19901991–20052006–2020SNDi of entire street network
HengshanMinh TanNapa

In new street additions, Hengshan built increasingly disconnected streets over time, while Minh Tân built increasingly disconnected streets from 1975 through 1991-2005, then improved and Napa built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Hengshan and Napa both became progressively more disconnected, while Minh Tân grew more disconnected from 1975 through 1991-2005, then improved. Hengshan and Minh Tân have been converging in their street-network character since 1975.